dolyame-ui-filter

{"modified":"2026-08-05T15:14:41Z","published":"2026-08-05T15:14:41Z","schema_version":"1.7.4","id":"MAL-2026-13154","summary":"Malicious code in dolyame-ui-filter (npm)","details":"\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (171758619b11932bfa2790206d34ea6322b3985c9cfe083915c41fdb5b18f9ed)\ndolyame-ui-filter@35.5.3 is advertised as a UI toolkit but its main entry loads _platform.js, which on require assembles destination hostnames at runtime via array.join('') to hide them from static inspection, resolving to Cloudflare Worker endpoints oob-worker.cf101-a.df.workers.dev, oob-worker.cf100-416.workers.dev, and oob-worker.cf99-9b3.workers.dev, with a DNS TXT fallback that reads chunked base64 from sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The module downloads a platform-specific binary via https.get, writes it to a temp path under a decoy name (dotnet_diag_<hex>.exe on Windows,.cache_<hex> on Unix), chmods 0755, and spawns it detached via cmd.exe or /bin/sh -c with unref(). Comments in the file mislabel the flow as telemetry/session dedup while the actual operation fetches and executes an opaque binary from an anonymous host. The delivery signals (anonymous Cloudflare Worker infrastructure with runtime-assembled hostnames, DNS TXT covert channel, decoy filenames impersonating.NET diagnostic tooling, detached background execution, purpose mismatch with the advertised UI package) satisfy the dropper fingerprint.\n","affected":[{"package":{"ecosystem":"npm","name":"dolyame-ui-filter"},"versions":["35.5.3"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"indicators":{"evidence_files":[{"path":"_platform.js","sha256":"e5f1f544f8d0b68bdc3e8d8cffed1a397acf8c5ed1c2a47518d7b121cd415dd0","tlsh":"91a1869616aa70198bb0dbe0c707541af65be6633780c2d8fb5ca5845f7326483b1efc"}],"package_integrity":[{"filename":"dolyame-ui-filter-35.5.3.tgz","hashes":{"sha1":"bc551696d026c358968471375eec0d34ee2a6335","sha512_sri":"sha512-eykQFWOrDFfWNQSUyk/GmSZ4K8K0EVQc+O5ssJRozoKYbEshSVO/NgDuCZ2gBh9L7OY5ZjxcP4799qqx98Gapg=="}}]}}}],"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/dolyame-ui-filter/v/35.5.3"}],"credits":[{"name":"Amazon Inspector","type":"FINDER","contact":["inspector-research@amazon.com"]}],"database_specific":{"malicious-packages-origins":[{"id":"IN-MAL-2026-015622","import_time":"2026-08-05T15:20:00.594874751Z","modified_time":"2026-08-05T15:14:41Z","sha256":"171758619b11932bfa2790206d34ea6322b3985c9cfe083915c41fdb5b18f9ed","source":"amazon-inspector","versions":["35.5.3"]}]}}